板栗壳色素基活性包装膜的制备及其在草莓保鲜中的应用OA
Preparation of chestnut shell pigment-based active packaging films and their application in strawberry preservation
[目的]研究板栗壳色素(CSP)添加量对海藻酸钠/羧甲基纤维素(SA/CMC)包装膜理化特性、功能特性及草莓保鲜效果的影响.[方法]以 CSP、SA、CMC 为基质,采用流延干燥法制备活性包装膜,测定其理化特性、光学特性、抗氧化活性相关指标,对其结构进行表征,并将其应用于草莓保鲜.[结果]负载不同质量分数 CSP 包装膜的理化特性、光学特性和抗氧化活性存在显著差异.CSP 与膜基质间相容性良好,它们之间主要通过分子间氢键和范德华力形成紧密的三维网络结构,从而提高膜的厚度、不透明度、拉伸强度和水蒸气透过率,并改善 CO2/O2 透过比.其中,添加3%CSP 的包装膜(SA/CMC/CSP-3)综合性能最佳,其拉伸强度为32.79 MPa,断裂伸长率为 31.40%,O2 透过率为 18.79×10-7 cm3/(m2·24 h·Pa),CO2 透过率为 1.51×10-5 cm3/(m2·24 h·Pa),CO2/O2 透过比为8.04∶1,更适合用于高呼吸强度的果蔬包装.此外,CSP 的引入显著增强了膜的紫外线阻隔性能和抗氧化能力,SA/CMC/CSP-3 和 SA/CMC/CSP-5 的 DPPH 自由基清除率分别为90.17%和93.67%,ABTS+自由基清除率分别为81.40%和98.58%.与SA/CMC 包装的草莓相比,SA/CMC/CSP-3包装的草莓在贮藏第7 d 的失重率和腐烂率分别降低了2.0%和17.0%.[结论]SA/CMC/CSP-3包装膜具有较好的理化特性、光学特性和抗氧化活性,能有效延缓草莓水分散失和腐败变质,表现出良好的保鲜效果.
[Objective]To investigate the effects of chestnut shell pigment(CSP)content on the physicochemical and functional properties of sodium alginate/carboxymethyl cellulose(SA/CMC)films and on their strawberry preservation performance.[Methods]Active packaging films were prepared via solution casting using CSP,SA,and CMC as the matrix.Their physicochemical properties,optical properties,antioxidant activity,and structure were characterized,and their preservation performance on strawberries was evaluated.[Results]The films loaded with different mass fractions of CSP exhibited significant differences in their physicochemical properties,optical properties,and antioxidant activity.CSP exhibited good compatibility with the film matrix,forming a compact three-dimensional network structure mainly through intermolecular hydrogen bonding and van der Waals forces,which in turn increased the film thickness,opacity,tensile strength,and water vapor transmission rate,and improved the CO2/O2 transmission ratio.Among them,the film containing 3%CSP(SA/CMC/CSP-3)exhibited the best overall performance,with a tensile strength of 32.79 MPa,an elongation at break of 31.40%,an oxygen transmission rate of 18.79×10-7 cm3/(m2·24 h·Pa),a carbon dioxide transmission rate of 1.51×10-5 cm3/(m2·24 h·Pa),and a CO2/O2 transmission ratio of 8.04∶1,making it more suitable for packaging fruits and vegetables with high respiration rates.In addition,the incorporation of CSP significantly enhanced the UV-blocking ability and antioxidant capacity of the films.The DPPH radical scavenging rates of SA/CMC/CSP-3 and SA/CMC/CSP-5 were 90.17%and 93.67%,respectively,and the ABTS+radical scavenging rates were 81.40%and 98.58%,respectively.Compared with strawberries packaged with the SA/CMC film,those packaged with SA/CMC/CSP-3 showed reductions in weight loss and decay rate of 2.0%and 17.0%,respectively,on the 7th day of storage.[Conclusion]The SA/CMC/CSP-3 film exhibited good physicochemical and optical properties and antioxidant activity,effectively delaying moisture loss and spoilage in strawberries and demonstrating a good preservation effect.
刘孟莹;薛佳琳;槐笠翔;肖雨婷;郭刚;崔亚杰;王浩燃;宋丽军
河北科技师范学院 食品科技学院,河北 秦皇岛 066600||商丘市产品质量检验检测中心,河南 商丘 476000河北科技师范学院 食品科技学院,河北 秦皇岛 066600河北科技师范学院 食品科技学院,河北 秦皇岛 066600河北科技师范学院 食品科技学院,河北 秦皇岛 066600河北科技师范学院 食品科技学院,河北 秦皇岛 066600河北科技师范学院 海洋学院,河北 秦皇岛 066600河北科技师范学院 食品科技学院,河北 秦皇岛 066600||河北科技师范学院 板栗产业技术教育部工程研究中心,河北 秦皇岛 066600河北科技师范学院 板栗产业技术教育部工程研究中心,河北 秦皇岛 066600||河北省天然产物活性成分与功能重点实验室,河北 秦皇岛 066600
轻工纺织
板栗壳色素海藻酸钠活性包装膜理化特性功能特性草莓保鲜
chestnut shell pigmentsodium alginateactive packaging filmphysicochemical propertyfunctional propertystrawberry preservation
《轻工学报》 2026 (4)
44-56,13
河北省重点研发计划项目(21326304D)
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